Rand Paul's on Snapchat. But is he using it the right way?

Politicians are the ultimately clingy friends.They show up in your email inbox. They want to be your friend on Facebook and Twitter. And now Sen. Rand Paul wants to be on Snapchat with you, too.The Kentucky Republican, a possible 2016 presidential contender, joined the photo messaging service this week, joining fellow Republican Rep. Michele Bachmann of Minnesota.Paul appears to be hoping that Snapchat — which lets you send a photo with text to friends that disappears automatically — will do …